LMK04826BEVM
LMK04826BEVM 评估模块
LMK04826BEVM
概述
LMK04826BEVM 和 LMK04828BEVM 支持 LMK04820 系列产品,该系列产品是支持 JEDEC JESD204B 且在业内具备超高性能的时钟调节器。双环路 PLLatinum™ 架构使用低噪声 VCXO 模块实现低于 100fs 的抖动(12kHz 至 20MHz)。双环架构由两个高性能锁相环 (PLL)、一个低噪声晶体振荡器电路以及一个高性能压控振荡器 (VCO) 构成。
第一个 PLL (PLL1) 具有低噪声抖动消除器功能,第二个 PLL (PLL2) 则执行时钟和 SYSREF 生成。PLL1 可配置为与外部 VCXO 模块配合使用,或与具有外部可调晶体和变容二极管的集成式晶体振荡器配合使用。用于很窄的环路带宽时,PLL1 使用 VCXO 模块或可调晶体的优异近端相位噪声(偏移低于 50kHz)清理输入时钟。PLL1 的输出将用作 PLL2 的清理输入参考,以锁定集成式 VCO。
可对 PLL2 的环路带宽进行优化以清理远端相位噪声(偏移高于 50 kHz),集成式 VCO 优于 VCXO 模块或 PLL1 中使用的可调晶体。
特性
- JEDEC JESD204B 支持
- 超低的 RMS 抖动
- 双环路架构
- 3 个带有 LOS 的冗余输入时钟
- 精密数字延迟,固定或动态可调
- 评估套件包括适用于 USB 与评估板连接的 USB2ANY 模块。
时钟抖动清除器
开始使用
- 订购 CDCE6214-Q1EVM
- 下载并安装 TICSPRO-SW
- 阅读 CDCE6214-Q1EVM 用户指南
- 在 TICSRPRO-SW 上配置寄存器
立即订购并开发
LMK04826BEVM — LMK04826BEVM 评估模块
TICSPRO-SW — TICS Pro GUI and Live Programming Tool for Clocking Devices
TICS Pro 1.7.8.0 installer binary for Windows operating system
产品
时钟发生器
时钟缓冲器
振荡器
时钟抖动清除器
时钟网络同步器
射频 PLL 与合成器
硬件开发
评估板
文档
TICS Pro 1.7.8.0 Release Notes
TICS Pro 1.7.8.0 Software Manifest
发布信息
Added
- LMK5C23208A
Improvements
- TCP server returns error descriptions
- TICSPro_TCP.py updated for python ≥ 3.10. Remove type annotations if backward compatibility with older python versions is required.
- LMK5B/5C:
- Warn when GPIOx selects REFx monitor, but REFx is not programmed
- Relative calculation of DPLLx_PH_OFFSET value
- Added fields and improved frequency planning for 1-PPS outputs
- PLLx_RDIV_MUX_SEL only sets recommended values when dropdown is changed; no longer changed by DPLL loop filter calculation or TCS file load
- Advanced Options checkbox added on Getting Started page
- GPIOx descriptions updated for accuracy
- LMK5B12212, LMK5C12212A:
- New step added to Start Page process to reduce current consumption and noise
- SRAM sequence EEPROM generation sets optimized values from new step in Start Page process
- LMK5B33414, LMK5C33414A:
- Simplified programming sequence by combining writes for the output divider synchronization sequence generator
Bug Fixes
- LMK5B12212, LMK5C12212A:
- Some controls which were not register-backed have been updated to be register-backed.
- LMK5B33414, LMK5C33414A:
- Fixed "Set SYNC Enable" buttons on "SYNC/SYSREF/1-PPS" page
Known Issues
- LMK5B and LMK5C family - In some cases, "Assign Selected VCO Settings to Device" and "Apply Output Clock Settings to Device" may need to be pressed twice for certain cascaded configurations to display correctly
- LMK05318 - In some cases, it is necessary to press "Calculate Frequency Plan" twice for correct VCO2 frequency. This issue is resolved in LMK05318B GUI.
- Burst mode page looping requires long delays to halt, and halting may crash the GUI. If possible, do not loop in burst mode.
- User Controls page can sometimes become desynchronized from Raw Registers and other pages. Refer to Raw Registers or other pages for correct values. Saving/Loading and Import/Export of register data is unaffected, and register data will still be written to and read from connected devices correctly.
技术文档
类型 | 标题 | 下载最新的英文版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 用户指南 | LMK04826/28 User’s Guide (Rev. B) | 2018年 3月 13日 | |||
证书 | LMK04826BEVM EU Declaration of Conformity (DoC) | 2019年 1月 2日 | ||||
数据表 | LMK0482x Ultra Low-Noise JESD204B Compliant Clock Jitter Cleaner With Dual Loop PLLs 数据表 (Rev. AS) | PDF | HTML | 2017年 9月 27日 |